Add processAnchorRefund function

[MissBlue00]

Task

Add a processAnchorRefund function to handle failed anchor transfer refunds.

Details

• Function signature: processAnchorRefund(transactionId: string): Promise<RefundResult>
• Process refund for failed deposit/withdrawal
• Handle partial refunds if applicable
• Update transaction status appropriately
• Add RefundResult interface

Test

Run pnpm --filter @stellar-pay/anchor-service build to verify no TypeScript errors.

[Day-veed]

@Day-veed has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

I would like to work on this.
I'll get this over to you by Thursday afternoon at the latest.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Day-veed to this issue.

[drips-wave]

Congratulations, @Day-veed! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on March 30, 2026.

🧑‍💻 @Day-veed: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

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